Home / 20,783,770.60-31,171,981.02-5,638,882.60

Finding the Fourth Proportional to 20,783,770.60, 31,171,981.02 and 5,638,882.60

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Solution

The fourth proportional to 20,783,770.60, 31,171,981.02 and 5,638,882.60 is: 8,457,326.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783,770.60 : 31,171,981.02 = 5,638,882.60 : x
  2. Step 2: Convert to fraction form
    20,783,770.60/31,171,981.02 = 5,638,882.60/x
  3. Step 3: Cross multiply
    20,783,770.60x = 31,171,981.02 × 5,638,882.60
  4. Step 4: Simplify right side
    20,783,770.60x = 175,775,141,381,208.25
  5. Step 5: Solve for x
    x = 175,775,141,381,208.25/20,783,770.60
  6. Step 6: Final answer
    x = 8,457,326.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.